Yarn-winding machine



LSQGE? Aug. 17,1926.

v E. WILDT YARN WINDING MACHINE 5 Sheets-Sheet 1 ATTORNEY Aug. 17 192s. 1,596,567

E. WILDT YARN WINDING MACHINE FilecvFeb. 6, 1925 3 Sheets-Sheet 5 N V ENTORI Edwin WIV/alf Patented Aug. 17, 1926.

vuit-1riz-:n STATE s PATENT oFiFifc-E.

EDWIN ivILD'Ig or` LEIoEsTER, ENGLAND, `AssIGNoa To WILDT a ooivirANY, LIMITED,

on LEICEsTEE, ENGLAND, A BRITISH COMPANY.

YAEN-WINDING MACHINE.

Application led February 6, 1925, Serial No. 7,221, and in England March 6, 1924-.

This invention relates to yarn winding Amachines and concerns those of the vertical spindle type employed for winding yarns upon conical or bottle bobbins and wherein the winding yarn is laid upon the lbobbin by al guide which is traversed up and down,

I and which is also, as the yarn is built up .riser at veach traverse 1s eifected By the term feed upon the bobbin,

fed upwards on its support so that the yarn becomes wound on the bobbin in a succession of conical layers. 1n machines of this kind the yarn guide is usually carried by what vis usually termed a riser which works vup on a vscrewed. rod.

The `object of 'theinvention is to provide an improved 'riser arrangement by reason of which the feed ofthe riser will always take place in accordance with the'thiclrnessof the farn being wound so that'adjustment of the feed for varying count-s of yarn can be eliminated.

According to the invention the feed of the Partly by mechanical means and partly by 'frictional contact of the riser with the wound yarn. wel mean, of course, the movement of the riser along the screwed rod, and by the term traverse we mean each successive up vand down movement of the screwed rod and riser relatively to the bobbin. y

`The arrangement is such that the main portion of the feed movement is imparted to the riserby the 'mechanical means and the remainder of the necessary movement is imparted frictionally by the wound yarn. The movement imparted friction'ally is in the nature of a compensating movement which makes up to the required Iextent the shortness rof the movement imparted mechanically and such compensating movementwill naturally vary, i. e. it will be greater orless, according to the thickness of thefya'rns which may be dealt with seeing that 4the thickness ofthe yarn determines-theextent of the compensat'ing movement. p

The invention also 'in-cludesthe provision 'ojrneanjs' for rendering-themechanical means inoperative upon breakage or -fai'lure of the winding yarn.

v1n further describing 'thefinvention reference willbe lliereifli.after made' to the accom'- panying drawings wherein a convenient embodiment of the invention is illustrated. In tliedrawingszf- Y i Figure 1 isa sectional side elevation of said embodiment. vFigure 2 is a front view of the same, Vand Figure Sis a plan thereof. According to the illustrated `embodiment of the invention the riser consistsof a;dsc l with a bevelled l'periphery for frictionally engaging the yarn wound on the lbobbin 2 which is mountedand driven vin the usual manner. The riser -1 is rotatably and vslidably mounted onl a vertical screwed rod 3 fixed in oneieiid of va lever l centrally pivoted on `the usual rising and falling bar 5 and provided on lits opposite end a cam roller or follower 6 which is maintainedy in engagement with the inclined vedge'of a camr member 7v on the machine frame 8 'by the action of a spring 9. The leveri ispressed -downon the bar 5 yby a spring 10. Pivotallymounted on the riser `1 is a nut device l1-which is controlled by a flat spring 12and thereby maintained in engagement with the thread on the screwed rod 3 upon which latter tliefriser moves when intermittently rotatated thereon. The arrangementis such that the nut device may be easily disengaged from the thread so as to enable the friser to be rapidly moved along the rod 3, when necessary `by hand. Situated below and connectedrto the riser disc is a vratchet wheel 13 engaged by a pawl 14 pivotally mounted on a bifurcatedarm 15 which is capable of oscillating movement about the aXis `of the disc 1. This arm is suitably actuated to' impart intermittent rotation to the ratchet wheel 413 through .the ymedium of the-pawl 141. In the .construc- A'tion shown `in` the drawings the :bifurcated end of the .arm 15 `engagesp and. vworks up anddown avertical rod .16 fixed in. a

'support 17 adjustably attached v.to .the

machine frame. Asthe b ar '5'rri's`es and falls during the yarn winding operation the .cam

r'ol'l or followerj'G, being-under the-inflience of thejsprinig 9,. travels along Aor .-lollowsglthe Ain"`C l*'I1ededge of the.. Cain 'member 7 sothat anfosc'il-latng mvement'is' imparted rto .the EV@ 4' lld tConsequently the vriser l .and the parts 'assocratedjtherewth move-1i @In-.Paw

with said lever. The eect of this is to oscillate the arm 15, since the bifurcated end of the latter engages the fixed rod 16. As the bar 5 rises the pawl lli slides over the teeth of the Wheel 13 without operating the latter, while as said bar falls the pawl operates through said wheel to impart the necessary upward feed of the riser 1 on the screwed rod The ratchet mechanism is arranged so that suiicient rotation is imparted to the riser to feed it up the screwed rod a distance slightly less than that necessary when dealing with the finest yarn, and this rotation may be determined by adjusting the rod 16 relatively to the bifurcated arm 15 so that a greater or less movement may be imparted to the latter according to requirements. in action the contact of the bevelled disc 1 with the wound yarn imparts the necessary additional rotation to the disc to make up for the deficiency of movement imparted by the ratchet mechanism.

The pawl 14- has fast on its pivot a collar 18 from which extends a wire or other finger 19 carrying at its free end a yarn guide 2O which is so arranged in relation to the bobbin 2 and the ruiming yarn, indicated at 21 in Figure 3, that while the yarn continues to run properly the pawl will be kept in engagement with the ratchet wheel, but upon the yarn breaking'or ceasing to run for any reason the finger will allow the pawl to pass over without engaging the teeth of the wheel thus causing rotation and consequent-ly upward feed of the riser to cease. Backward movement of the ratchet wheel is prevented by a spring presse-d pawl 22 pivoted on an arm 23 freely mounted at one end on the axis of the riser 1 and prevented from rotation by the engagement of its opposite end with a vertical rod 2a fixed in the lever 4L adjacent and parallel to the screwed rod 3. rI his latter and the rod 24 may, if desired, be connected by a plate 25.

The details of construction may be varied without departing from the scope of the invention.

-What I claim is 1. For a yarn winding machine of the kind herein described, a riser arrangement comprising, in combination, mechanical means and frictionally acting means which co-operate to impart the necessary feed to the riser at each traverse of the latter relatively to the bobbin whereby each feed movement is effected partly positively and partly frictionally.

2. For a yarn winding machine of the kind herein described, a riser arrangement comprising a riser disc adapted for frictional contact with and rotation by the wound yarn whereby a small portion of its feed at each traverse is imparted to it, and

mechanically acting means for imparting the main' portion of said feed to the riser disc prior to the movement imparted frictionally.

3. F or a yarn winding machine of the kind herein described, a riser arrangement comprising a riser disc adapted for frictional contact with and rotation by the wound yarn whereby a small portion of its feed at each traverse is imparted to it, and ratchet mechanism for rotating the riser disc so that the main'portion of said feed is mr parted to it prior to its contact with the yarn.

4i. For yarn winding machine of the kind herein described, a riser arrangement comprising a riser disc adapted for frictional contact with and rotation by the wound yarn whereby a small portion of its feed at each traverse is imparted to it, mechanically acting means for imparting the main portion of said feed to the riser disc prior io the movement imparted frictionally, and means for rendering the mechanically acting means inoperative upon breakage or failure of the winding yarn.

5. F or a yarn winding machine of the kind herein described a riser arrangement comprising a riser disc adapted for frictional contact with and rotation by the wound yarn whereby a small portion of its feed at each traverse is imparted to it, ratchet mechanism for rotating the riser disc so that the main portion of feed is imparted to it prior to its contact with the yarn, and means for rendering the ratchet mechanism inoperative upon breakage or failure of the winding yarn.

6. F or a yarn winding machine of the kind herein described, a riser arrangement comprising a riser disc adapted for frictional contact with and rotation by the wound yarn whereby a small portion of its feed at each traverse is imparted to it, an arm adapted to oscillate about the axis of the riser disc, a pawl on said arm, a ratchet wheel connected to the riser disc and normally engaged by the pawl whereby upon actuation of the arm the riser disc is rotated so that the main portion of said feed is imparted to it prior to its contact with the yarn, and means for actuating the arm.

7. For a yarn winding machine of the kind herein described, a riser arrangement comprising a riser disc adapted for frictional contact with and rotation by the wound yarn whereby a small portion of its feed at each traverse is imparted to it, an arm adapted to oscillate about the axis of the riser disc, a pawl on said arm, a ratchet wheel connected to the riser disc and engaged by the pawl whereby upon actuation of the arm the riser disc is rotated so that the main portion of said feed is imparted to it prior to .its contact with the yarn, a yarn laying finger adapted to maintain the pawl in engagement with the ratchet Wheel while the yarn continues to run properly, and means for actuating the arm.

8. For a yarn winding machine of the kind herein described, a riser arrangement comprising a riser disc adapted for frictional contact with and rotation by the wound yarn whereby a small portion of its feed at each traverse is imparted to it, an arm adapted to oscillate about the axis of the riser disc, a pawl on said arm, a ratchet wheel connected to the riser disc and normally engaged by the pawl whereby upon actuation of the arm the riser disc'is rotated so that the main portion of said feed is imparted to it prior to its Contact with the yarn, a yarn laying finger adapted to maintain the pawl in engagement with the ratchet wheel while the yarn continues to run properly, a spring controlled cam opera-ted lever, and a fixed rod which is engaged by the arm, said lever and rod cooperating to cause the oscillation of the arm for rotating the riser disc.

9. For a yarn winding machine of the kind herein described, a riser arrangement comprising a riser disc adapted for fric tional contact with and rotation by the wound yarn whereby a small portion of its feed at each traverse is imparted'to it, an arm adapted to oscillate about the axis of the riser disc, a pawl on said arm, a ratchet wheel connected to the riser disc and normally engaged by the pawl whereby upon actuation of the arm the riser disc is rotated so that the main portion of said feed is imparted to it prior to its contact with the yarn, a yarn laying linger adapted to maintain the pawl in engagement with the ratchet wheel while the yarn continues to run properly, a spring controlled cam operated lever, a fixed rod which is engaged by the arm, said lever and rod cooperating to cause the oscillation of the arm for rotating the riser disc, and a spring pressed pawl for engaging the ratchet Wheel to pre- Vent reverse rotation of said disc.

10. For a yarn winding machine of the kind herein described, a riser arrangement comprising a vertical screwed rod, a riser disc rotatable and slidable on the screwed rod, a spring pressed nut device on the riser disc for engaging the screwed rod, said riser disc being adapted for frictional contact with and rotation by the wound yarn whereby a small portion of its feed upwards on the rod at each traverse is imparted to it, a rising and falling bar, a spring controlled lever, pivoted on said bar and carrying the screwed rod at one end, a cam follower on the opposite end of the lever, a fixed Cam engaged by said follower so that oscillation is imparted to the lever upon actuation of the rising and falling bar, a ratchet wheel connected to the riser disc, a bifurcated arm mounted for oscillation about the axis of said disc, a pawl carried by said arm for engaging the ratchet wheel, an adjustable rod engaged by the bifurcated arm whereby upon oscillation of the spring controlled lever the bifurcated arm is also oscillated and the riser disc thereby rotated so thatthe main portion of said feed is imparted to it prior toits Contact with the wound yarn, and a yarn laying finger connected to the pawl and adapted te, maintain it in engagement with the ratchet wheel while the yarn continues to run properly, an arm freely mounted on the axis of the riser, a vertical rod carried by the oscillating lever and adapted to engage said arm to prevent rotation of same, and a spring pressed pawl carried by said arm and adapted for engagement with the ratchet wheel to prevent reverse rotation thereof.

In testimony whereof I have signed my name to this specification.

EDWIN WILDT. 

